Top-ranked Arizona will be without starting forward Brandon Ashley for the remainder of the season with a foot injury, a source close to the Arizona program told ESPN.com on Sunday.

Ashley, who was averaging 11.5 points and 5.8 rebounds per game, suffered the injury three minutes into the loss to California when he landed awkwardly after missing a shot. He returned to the bench and was in a walking boot and on crutches in the second half.

Miller feared the injury was a broken foot after the game.

"We have to get back to the drawing board and make sure we can move forward if Brandon is not with us," Miller said shortly after the loss.

If the No. 1 Arizona Wildcats are to stave off an upset of the California Golden Bears on Saturday, Feb. 1, they may have to do so without their second-leading scorer. Brandon Ashley left the game with a foot injury.

Myron Medcalf of ESPN.com reported the sophomore forward returned to the bench after going to the locker room, but he had ice on his right foot: